./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/cstrlen.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/cstrlen.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1e3ef20869762bcfb9d8151d96b8065864cd760e 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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 15:10:50,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 15:10:50,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 15:10:50,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 15:10:50,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 15:10:50,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 15:10:50,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 15:10:50,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 15:10:50,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 15:10:50,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 15:10:50,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 15:10:50,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 15:10:50,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 15:10:50,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 15:10:50,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 15:10:50,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 15:10:50,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 15:10:50,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 15:10:50,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 15:10:50,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 15:10:50,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 15:10:50,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 15:10:50,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 15:10:50,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 15:10:50,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 15:10:50,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 15:10:50,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 15:10:50,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 15:10:50,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 15:10:50,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 15:10:50,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 15:10:50,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 15:10:50,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 15:10:50,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 15:10:50,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 15:10:50,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 15:10:50,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 15:10:50,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 15:10:50,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 15:10:50,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 15:10:50,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 15:10:50,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-07-06 15:10:50,548 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 15:10:50,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 15:10:50,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 15:10:50,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 15:10:50,549 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 15:10:50,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 15:10:50,550 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 15:10:50,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 15:10:50,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 15:10:50,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-06 15:10:50,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 15:10:50,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-06 15:10:50,551 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-07-06 15:10:50,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 15:10:50,551 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 15:10:50,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-06 15:10:50,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 15:10:50,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 15:10:50,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 15:10:50,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:10:50,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 15:10:50,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 15:10:50,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-06 15:10:50,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 15:10:50,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 15:10:50,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-06 15:10:50,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 15:10:50,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e3ef20869762bcfb9d8151d96b8065864cd760e [2021-07-06 15:10:50,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 15:10:50,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 15:10:50,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 15:10:50,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 15:10:50,837 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 15:10:50,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2021-07-06 15:10:50,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ac51a89b/270928f457de403fa5105abbae3eb9fa/FLAG795effa28 [2021-07-06 15:10:51,185 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 15:10:51,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2021-07-06 15:10:51,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ac51a89b/270928f457de403fa5105abbae3eb9fa/FLAG795effa28 [2021-07-06 15:10:51,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ac51a89b/270928f457de403fa5105abbae3eb9fa [2021-07-06 15:10:51,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 15:10:51,627 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 15:10:51,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 15:10:51,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 15:10:51,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 15:10:51,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:10:51" (1/1) ... [2021-07-06 15:10:51,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6268176b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:51, skipping insertion in model container [2021-07-06 15:10:51,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 03:10:51" (1/1) ... [2021-07-06 15:10:51,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 15:10:51,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 15:10:51,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:10:51,746 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 15:10:51,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 15:10:51,768 INFO L208 MainTranslator]: Completed translation [2021-07-06 15:10:51,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:51 WrapperNode [2021-07-06 15:10:51,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 15:10:51,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 15:10:51,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 15:10:51,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 15:10:51,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:51" (1/1) ... [2021-07-06 15:10:51,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:51" (1/1) ... [2021-07-06 15:10:51,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 15:10:51,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 15:10:51,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 15:10:51,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 15:10:51,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:51" (1/1) ... [2021-07-06 15:10:51,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:51" (1/1) ... [2021-07-06 15:10:51,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:51" (1/1) ... [2021-07-06 15:10:51,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:51" (1/1) ... [2021-07-06 15:10:51,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:51" (1/1) ... [2021-07-06 15:10:51,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:51" (1/1) ... [2021-07-06 15:10:51,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:51" (1/1) ... [2021-07-06 15:10:51,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 15:10:51,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 15:10:51,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 15:10:51,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 15:10:51,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:51" (1/1) ... [2021-07-06 15:10:51,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 15:10:51,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 15:10:51,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-06 15:10:51,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-06 15:10:51,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-06 15:10:51,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-07-06 15:10:51,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 15:10:51,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 15:10:51,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-06 15:10:52,130 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 15:10:52,130 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-07-06 15:10:52,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:10:52 BoogieIcfgContainer [2021-07-06 15:10:52,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 15:10:52,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 15:10:52,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 15:10:52,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 15:10:52,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 03:10:51" (1/3) ... [2021-07-06 15:10:52,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252e9763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:10:52, skipping insertion in model container [2021-07-06 15:10:52,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 03:10:51" (2/3) ... [2021-07-06 15:10:52,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252e9763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 03:10:52, skipping insertion in model container [2021-07-06 15:10:52,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:10:52" (3/3) ... [2021-07-06 15:10:52,137 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrlen.c [2021-07-06 15:10:52,141 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 15:10:52,141 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-07-06 15:10:52,204 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:10:52,208 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:10:52,208 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:10:52,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-06 15:10:52,220 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:52,220 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-06 15:10:52,220 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:52,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:52,224 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2021-07-06 15:10:52,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:52,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670558302] [2021-07-06 15:10:52,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:52,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:52,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:52,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:52,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:52,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:52,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:52,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670558302] [2021-07-06 15:10:52,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670558302] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:52,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:52,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:52,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317919057] [2021-07-06 15:10:52,336 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:52,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:52,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:52,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:52,351 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:52,419 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2021-07-06 15:10:52,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:52,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-07-06 15:10:52,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:52,425 INFO L225 Difference]: With dead ends: 38 [2021-07-06 15:10:52,425 INFO L226 Difference]: Without dead ends: 5 [2021-07-06 15:10:52,427 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:52,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2021-07-06 15:10:52,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2021-07-06 15:10:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4 transitions. [2021-07-06 15:10:52,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 4 transitions. Word has length 4 [2021-07-06 15:10:52,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:52,446 INFO L442 AbstractCegarLoop]: Abstraction has 5 states and 4 transitions. [2021-07-06 15:10:52,446 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 4 transitions. [2021-07-06 15:10:52,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-07-06 15:10:52,446 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:52,446 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-07-06 15:10:52,447 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 15:10:52,447 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:52,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:52,450 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2021-07-06 15:10:52,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:52,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203819912] [2021-07-06 15:10:52,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:52,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:52,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:52,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:52,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:52,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:52,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:52,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203819912] [2021-07-06 15:10:52,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203819912] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:52,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:52,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:52,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407702927] [2021-07-06 15:10:52,479 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:52,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:52,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:52,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:52,480 INFO L87 Difference]: Start difference. First operand 5 states and 4 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:52,482 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2021-07-06 15:10:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:52,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-07-06 15:10:52,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:52,483 INFO L225 Difference]: With dead ends: 5 [2021-07-06 15:10:52,483 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:10:52,483 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:52,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:10:52,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:10:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:10:52,484 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-07-06 15:10:52,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:52,484 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:10:52,485 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:10:52,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:10:52,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:10:52,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,497 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:52,497 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,497 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,498 INFO L765 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: true [2021-07-06 15:10:52,498 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:10:52,498 INFO L765 garLoopResultBuilder]: At program point L36(lines 35 37) the Hoare annotation is: true [2021-07-06 15:10:52,498 INFO L765 garLoopResultBuilder]: At program point L32(lines 26 33) the Hoare annotation is: true [2021-07-06 15:10:52,498 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,498 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:52,499 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,499 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,499 INFO L762 garLoopResultBuilder]: For program point L30-1(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:52,499 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,499 INFO L765 garLoopResultBuilder]: At program point L30-3(lines 30 31) the Hoare annotation is: true [2021-07-06 15:10:52,499 INFO L762 garLoopResultBuilder]: For program point L30-4(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:52,500 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,500 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,500 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:52,500 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:52,500 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-06 15:10:52,500 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:10:52,503 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (1/4) [2021-07-06 15:10:52,505 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:10:52,505 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:10:52,506 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:10:52,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-07-06 15:10:52,507 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:52,507 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-07-06 15:10:52,507 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:52,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:52,508 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2021-07-06 15:10:52,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:52,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098811442] [2021-07-06 15:10:52,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:52,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:52,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:52,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:52,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:52,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:52,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:52,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:52,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098811442] [2021-07-06 15:10:52,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098811442] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:52,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:52,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:52,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406174737] [2021-07-06 15:10:52,521 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:52,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:52,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:52,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:52,522 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:52,539 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-07-06 15:10:52,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:52,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-07-06 15:10:52,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:52,540 INFO L225 Difference]: With dead ends: 24 [2021-07-06 15:10:52,540 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:10:52,541 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:52,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:10:52,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:10:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:10:52,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-07-06 15:10:52,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:52,542 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:10:52,542 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:10:52,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:10:52,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:10:52,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,551 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:52,551 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,551 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,551 INFO L758 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:52,551 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:10:52,552 INFO L758 garLoopResultBuilder]: At program point L36(lines 35 37) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:52,552 INFO L758 garLoopResultBuilder]: At program point L32(lines 26 33) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:52,552 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,552 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:52,552 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,552 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,553 INFO L762 garLoopResultBuilder]: For program point L30-1(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:52,553 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,553 INFO L758 garLoopResultBuilder]: At program point L30-3(lines 30 31) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:52,553 INFO L762 garLoopResultBuilder]: For program point L30-4(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:52,553 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,553 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,554 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:52,554 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:52,554 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-06 15:10:52,554 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:10:52,554 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (2/4) [2021-07-06 15:10:52,556 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:10:52,556 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:10:52,557 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:10:52,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-06 15:10:52,558 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:52,558 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-06 15:10:52,558 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:52,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:52,559 INFO L82 PathProgramCache]: Analyzing trace with hash 889509673, now seen corresponding path program 1 times [2021-07-06 15:10:52,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:52,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110388537] [2021-07-06 15:10:52,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:52,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:52,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:52,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:52,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:52,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:52,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:52,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110388537] [2021-07-06 15:10:52,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110388537] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:52,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:52,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:52,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220886258] [2021-07-06 15:10:52,577 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:52,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:52,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:52,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:52,578 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:52,598 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2021-07-06 15:10:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:52,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-07-06 15:10:52,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:52,599 INFO L225 Difference]: With dead ends: 38 [2021-07-06 15:10:52,599 INFO L226 Difference]: Without dead ends: 7 [2021-07-06 15:10:52,602 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:52,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-07-06 15:10:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-07-06 15:10:52,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-07-06 15:10:52,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-07-06 15:10:52,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:52,604 INFO L442 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-07-06 15:10:52,604 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,605 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-07-06 15:10:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-07-06 15:10:52,605 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:52,605 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-07-06 15:10:52,605 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-06 15:10:52,605 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:52,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:52,606 INFO L82 PathProgramCache]: Analyzing trace with hash 889569255, now seen corresponding path program 1 times [2021-07-06 15:10:52,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:52,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638015198] [2021-07-06 15:10:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:52,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:52,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:52,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:52,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:52,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:52,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:52,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638015198] [2021-07-06 15:10:52,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638015198] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:52,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:52,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:52,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274354523] [2021-07-06 15:10:52,623 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:52,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:52,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:52,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:52,623 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:52,629 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-07-06 15:10:52,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:52,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-07-06 15:10:52,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:52,630 INFO L225 Difference]: With dead ends: 7 [2021-07-06 15:10:52,630 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:10:52,631 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:52,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:10:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:10:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:10:52,631 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-07-06 15:10:52,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:52,632 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:10:52,632 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:10:52,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:10:52,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:10:52,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,637 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:52,637 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,637 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,638 INFO L758 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:52,638 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:10:52,638 INFO L758 garLoopResultBuilder]: At program point L36(lines 35 37) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:52,638 INFO L758 garLoopResultBuilder]: At program point L32(lines 26 33) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:52,638 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,638 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:52,639 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,639 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,639 INFO L762 garLoopResultBuilder]: For program point L30-1(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:52,639 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,639 INFO L758 garLoopResultBuilder]: At program point L30-3(lines 30 31) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:52,639 INFO L762 garLoopResultBuilder]: For program point L30-4(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:52,639 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,640 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,640 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:52,640 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:52,640 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-06 15:10:52,640 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:10:52,640 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (3/4) [2021-07-06 15:10:52,641 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW ======== [2021-07-06 15:10:52,642 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 15:10:52,642 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 15:10:52,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-06 15:10:52,643 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 15:10:52,643 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 15:10:52,644 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-07-06 15:10:52,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 15:10:52,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1804996133, now seen corresponding path program 1 times [2021-07-06 15:10:52,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 15:10:52,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662300477] [2021-07-06 15:10:52,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 15:10:52,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 15:10:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 15:10:52,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:52,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 15:10:52,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 15:10:52,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 15:10:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 15:10:52,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 15:10:52,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662300477] [2021-07-06 15:10:52,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662300477] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 15:10:52,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 15:10:52,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-06 15:10:52,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766361006] [2021-07-06 15:10:52,665 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-06 15:10:52,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 15:10:52,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 15:10:52,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:52,667 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 15:10:52,684 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-07-06 15:10:52,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 15:10:52,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-07-06 15:10:52,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 15:10:52,685 INFO L225 Difference]: With dead ends: 24 [2021-07-06 15:10:52,685 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 15:10:52,685 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 15:10:52,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 15:10:52,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 15:10:52,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 15:10:52,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-07-06 15:10:52,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 15:10:52,705 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 15:10:52,706 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 15:10:52,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 15:10:52,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 15:10:52,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-07-06 15:10:52,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-07-06 15:10:52,713 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:52,713 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,713 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,713 INFO L758 garLoopResultBuilder]: At program point L19(lines 12 20) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:52,714 INFO L762 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-07-06 15:10:52,714 INFO L758 garLoopResultBuilder]: At program point L36(lines 35 37) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:52,714 INFO L758 garLoopResultBuilder]: At program point L32(lines 26 33) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:52,714 INFO L762 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,714 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-07-06 15:10:52,714 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,714 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,715 INFO L762 garLoopResultBuilder]: For program point L30-1(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:52,715 INFO L762 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-07-06 15:10:52,715 INFO L758 garLoopResultBuilder]: At program point L30-3(lines 30 31) the Hoare annotation is: (<= 1 ULTIMATE.start_build_nondet_String_~length~0) [2021-07-06 15:10:52,715 INFO L762 garLoopResultBuilder]: For program point L30-4(lines 30 31) no Hoare annotation was computed. [2021-07-06 15:10:52,715 INFO L762 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,715 INFO L762 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-07-06 15:10:52,715 INFO L762 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:52,715 INFO L762 garLoopResultBuilder]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2021-07-06 15:10:52,716 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-06 15:10:52,716 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 15:10:52,716 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW was SAFE (4/4) [2021-07-06 15:10:52,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 03:10:52 BoogieIcfgContainer [2021-07-06 15:10:52,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 15:10:52,737 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 15:10:52,737 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 15:10:52,737 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 15:10:52,738 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 03:10:52" (3/4) ... [2021-07-06 15:10:52,739 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-06 15:10:52,745 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-07-06 15:10:52,760 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-07-06 15:10:52,760 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-06 15:10:52,782 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 15:10:52,796 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 15:10:52,797 INFO L168 Benchmark]: Toolchain (without parser) took 1170.19 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 40.0 MB in the beginning and 50.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2021-07-06 15:10:52,797 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 44.0 MB. Free memory is still 26.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:10:52,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 141.77 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 30.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 15:10:52,798 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.66 ms. Allocated memory is still 58.7 MB. Free memory was 30.7 MB in the beginning and 42.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-07-06 15:10:52,798 INFO L168 Benchmark]: Boogie Preprocessor took 37.14 ms. Allocated memory is still 58.7 MB. Free memory was 42.9 MB in the beginning and 41.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:10:52,799 INFO L168 Benchmark]: RCFGBuilder took 287.50 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 28.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-06 15:10:52,799 INFO L168 Benchmark]: TraceAbstraction took 604.03 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 28.5 MB in the beginning and 52.3 MB in the end (delta: -23.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 15:10:52,799 INFO L168 Benchmark]: Witness Printer took 59.38 ms. Allocated memory is still 75.5 MB. Free memory was 52.3 MB in the beginning and 50.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 15:10:52,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 44.0 MB. Free memory is still 26.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 141.77 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 30.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.66 ms. Allocated memory is still 58.7 MB. Free memory was 30.7 MB in the beginning and 42.9 MB in the end (delta: -12.2 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.14 ms. Allocated memory is still 58.7 MB. Free memory was 42.9 MB in the beginning and 41.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 287.50 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 28.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 604.03 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 28.5 MB in the beginning and 52.3 MB in the end (delta: -23.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 59.38 ms. Allocated memory is still 75.5 MB. Free memory was 52.3 MB in the beginning and 50.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 19 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 300.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 5.6ms, AutomataDifference: 94.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 9.5ms, InitialAbstractionConstructionTime: 6.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 14 SDslu, 10 SDs, 0 SdLazy, 15 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9.5ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.2ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 2.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 4.3ms SsaConstructionTime, 21.6ms SatisfiabilityAnalysisTime, 47.4ms InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 19 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 49.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 19.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 7.9ms, InitialAbstractionConstructionTime: 0.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 13 SDslu, 1 SDs, 0 SdLazy, 7 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 6 NumberOfFragments, 12 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.8ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 4.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.6ms SsaConstructionTime, 2.3ms SatisfiabilityAnalysisTime, 7.4ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 19 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 84.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 1.1ms, AutomataDifference: 33.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 4.6ms, InitialAbstractionConstructionTime: 0.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 13 SDslu, 10 SDs, 0 SdLazy, 17 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 1.9ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 2.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.3ms SsaConstructionTime, 7.7ms SatisfiabilityAnalysisTime, 18.6ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW CFG has 1 procedures, 19 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 74.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 19.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6.8ms, InitialAbstractionConstructionTime: 0.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 11 SDslu, 1 SDs, 0 SdLazy, 7 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 6 NumberOfFragments, 12 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 2.2ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5ms SsaConstructionTime, 3.0ms SatisfiabilityAnalysisTime, 14.2ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 <= length - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 <= length - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 <= length - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 <= length RESULT: Ultimate proved your program to be correct! [2021-07-06 15:10:52,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...